The frequency is around 7.4 HZ Electromagnetic, and is determined by
taking the earth's diameter in meters and multiplying by Pi.(Pi x d)
Then divide this into the speed of light which is approx 299.98^6
(meters per second).
<Dave>
Bob Aldrich wrote:
>
> Hello All,
>
> I am passing this question for a friend, who wants to know how do you
> measure the earth resonance frequency?
>
> Is it electromagnetic or is it mechanical resonance?
>
> Bob Aldrich
> Los Angeles